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Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended |  |
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Dec. 31, 2023 USD ($) segment renewal_option qtr | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of reportable operating segment | segment | 1 |  |  |
Accrued interest reversed against interest income | $ 0 | $ 0 |  |
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Accrued interest receivable and other assets | Accrued interest receivable and other assets |  |
Accrued interest receivable on available-for-sale debt securities | $ 1,400,000 | $ 1,500,000 |  |
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Accrued interest receivable and other assets | Accrued interest receivable and other assets |  |
Accrued interest receivable on held-to-maturity debt securities | $ 1,300,000 | $ 1,300,000 |  |
Accrued interest receivable | $ 21,600,000 | $ 17,300,000 |  |
Period of delinquent loan | 90 days |  |  |
Number of quarters used in the mean loss calculation | qtr | 8 |  |  |
DCF methodology, percentage (in percent) | 85.90% | 86.00% |  |
WARM methodology, percentage (in percent) | 14.10% | 14.00% |  |
Credit losses on OBS credit exposures | $ 759,000 | $ 603,000 | $ 0 | $ 0
Number of options to renew | renewal_option | 1 |  |  |
Premises and Equipment | Minimum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of premises and equipment | 3 years |  |  |
Premises and Equipment | Maximum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of premises and equipment | 39 years |  |  |
Furniture, Fixtures and Equipment | Minimum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of premises and equipment | 3 years |  |  |
Furniture, Fixtures and Equipment | Maximum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of premises and equipment | 10 years |  |  |
Buildings and Building Improvements | Minimum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of premises and equipment | 15 years |  |  |
Buildings and Building Improvements | Maximum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of premises and equipment | 39 years |  |  |
Core Deposit | FC Banc Corp |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Amortization of intangible assets | 4 years |  |  |
Core Deposit | Lake National Bank |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Amortization of intangible assets | 10 years |  |  |

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